CN209896049U

CN209896049U - Single-phase rectifier bridge

Info

Publication number: CN209896049U
Application number: CN201921245308.7U
Authority: CN
Inventors: 周威; 马青
Original assignee: Yangzhou Kenda Electronic Co Ltd
Current assignee: Yangzhou Kenda Electronic Co Ltd
Priority date: 2019-08-02
Filing date: 2019-08-02
Publication date: 2020-01-03
Anticipated expiration: 2029-08-02

Abstract

The scheme relates to a semiconductor rectifying device, in particular to a single-phase rectifier bridge which comprises a bottom plate, diode chips, a connecting bridge and a wiring terminal, wherein the bottom plate is provided with four pieces, the front surfaces of the four pieces of bottom plate are welded with the diode chips wrapped by copper sheets, the anodes of the diode chips wrapped by the copper sheets are upward and the cathodes of the diode chips are downward, the anodes of the diode chips positioned on two adjacent bottom plates are connected through the connecting bridge, and a rectangular rectifier bridge with a hole in the middle is formed; four just, negative pole output terminal who has single-phase rectification to and the input binding post of single-phase alternating current have been welded respectively on the bottom plate, the bottom plate is aluminium base composite sheet, has seted up the rectangle square hole between four bottom plates, be provided with water cooling assembly in the rectangle square hole. The service life of the diode chip is prolonged, and the thermoelectric generation piece is arranged, so that the thermoelectric generation piece can generate electricity by utilizing the temperature difference between the heat conduction plate and the water tank, and the micro generator can rotate without an external power supply.

Description

Single-phase rectifier bridge

Technical Field

The utility model relates to a semiconductor rectifier device specifically is a single-phase rectifier bridge.

Background

At present, a semiconductor rectifier device widely applied to industries such as a frequency converter, a high-frequency inverter welding machine, a high-power switching power supply and the like generally comprises a rectifier bridge consisting of a diode chip, a ceramic-coated copper sheet, a base plate, a connecting bridge and a wiring terminal, and the rectifier bridge is packaged and fixed in a shell through epoxy resin to form a rectifier module. The rectifying module is complex in structure, and because the rectifying module is packaged and fixed in a shell through epoxy resin, the temperature generated during working is difficult to dissipate, so that the internal temperature of the rectifying module is high, the rectifying module works in a critical or ultrahigh temperature state for a long time, the reliability and stability of the work of a diode chip are reduced, the service life of the diode chip is also reduced, and the diode chip is even burnt.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a single-phase rectifier bridge to solve foretell problem.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model discloses a single-phase rectifier bridge, including bottom plate, diode chip, connecting bridge and binding post, the bottom plate has four, and four all welded on the front of bottom plate has the diode chip of wrapping up by the copper sheet, and the positive pole of the diode chip of wrapping up by the copper sheet all faces up, and the negative pole all faces down, and the diode chip positive pole that lies in on two adjacent bottom plates is connected through the connecting bridge, forms a rectangle rectifier bridge that has a hole in the middle; four just, negative pole output terminal who has single-phase rectification to and the input binding post of single-phase alternating current have been welded respectively on the bottom plate, the bottom plate is aluminium base composite sheet, has seted up the rectangle square hole between four bottom plates, be provided with water cooling assembly in the rectangle square hole.

Preferably, the water cooling component comprises a heat conducting plate, a water cooling tank, a water cooling pipe, an impeller and a micro motor; the heat-conducting plate passes through the heat conduction post welding on the bottom plate, the water-cooling tank sets up on the heat-conducting plate, and the water-cooling tank separates into through the baffle and retrieves room and cooling chamber, retrieve the room with through the water-cooling tube intercommunication between the cooling chamber, the water-cooling tube spirals and arranges at the back of bottom plate, and the outside fixed mounting of water-cooling tank has micro motor, micro motor's output rotates and runs through the water-cooling tank and installs the impeller, the impeller runs through the through-hole that sets up at the baffle, and the impeller is used for retrieving indoor cooling hydraulic pressure indentation cooling in the cooling chamber for the coolant liquid circulates in the water-cooling tube.

Preferably, through thermoelectric generation piece fixed connection between heat-conducting plate and the water-cooling tank, thermoelectric generation piece and micro motor electric connection, thermoelectric generation piece is used for supplying power for micro motor.

Preferably, the cooling liquid in the water cooling tank is deionized water.

Preferably, the heat conducting plate, the water cooling tank and the water cooling pipe are all copper products.

Preferably, the width and the thickness of the connecting bridge are 3-6mm of copper bars.

Compared with the prior art, the beneficial effects of the utility model are that: the single-phase rectifier bridge of the utility model has the advantages that the diode chip wrapped by the copper sheet is directly welded on the bottom plate, so that the heat conductivity is high, the thermal resistivity is low, the heat dissipation effect is good, meanwhile, by arranging the water cooling component, the micro motor drives the impeller to rotate to retract the cooling liquid into the cooling chamber for cooling, and meanwhile, the cooling liquid in the cooling chamber enters the water cooling pipe to efficiently cool the bottom plate, thereby ensuring the reliable and stable work of the diode chip production time, prolonging the service life of the diode chip, relieving the high-temperature pressure and expansion coefficient of the rectifier device, ensuring the reliability and stability of the work of the diode chip, prolonging the service life of the diode chip, and through arranging the temperature difference power generation piece, therefore, the temperature difference between the heat conducting plate and the water tank is utilized to generate electricity, and the electricity is supplied to the micro generator to rotate, so that an external power supply is not needed.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a bottom view of the present invention;

fig. 3 is a sectional view taken along line a-a of fig. 2.

In the figure: the thermoelectric generation device comprises a base plate 1, a diode chip 2, a connecting bridge 3, a wiring terminal 4, a water cooling component 5, a heat conducting plate 51, a water cooling box 52, a water cooling pipe 53, an impeller 54, a micro motor 55, a partition plate 56, a recovery chamber 521, a cooling chamber 522 and a thermoelectric generation sheet 57.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

Referring to fig. 1-3, the single-phase rectifier bridge of the present invention comprises a bottom plate 1, diode chips 2, a connecting bridge 3 and a connecting terminal 4, wherein four bottom plates 1 are welded on the front surface of the bottom plate 1, the diode chips 2 wrapped by copper sheets are welded on the front surface of the bottom plate 1, the anodes of the diode chips 2 wrapped by copper sheets are all upward, the cathodes of the diode chips 2 are all downward, the anodes of the diode chips 2 on two adjacent bottom plates 1 are connected through the connecting bridge 3, and a rectangular rectifier bridge with a hole in the middle is formed; four just, negative pole output terminal 4 of single-phase rectification to and the input terminal 4 of single-phase alternating current have been welded respectively on the bottom plate 1, bottom plate 1 is aluminium base composite sheet, has seted up the rectangle square hole between four bottom plates 1, be provided with water cooling module 5 in the rectangle square hole.

As an embodiment of the present invention, the water cooling assembly 5 includes a heat conducting plate 51, a water cooling tank 52, a water cooling pipe 53, an impeller 54 and a micro motor 55; the heat conducting plate 51 is welded on the base plate 1 through a heat conducting column, the water cooling tank 52 is arranged on the heat conducting plate 51, the water cooling tank 52 is partitioned into a recovery chamber 521 and a cooling chamber 522 through a partition plate 56, the recovery chamber 521 is communicated with the cooling chamber 522 through a water cooling pipe 53, the water cooling pipe 53 is spirally arranged on the back surface of the base plate 1, a micro motor 55 is fixedly arranged outside the water cooling tank 52, the output end of the micro motor 55 rotatably penetrates through the water cooling tank 52 and is provided with an impeller 54, the impeller 54 penetrates through a through hole formed in the partition plate 56, the impeller 54 is used for retracting cooling hydraulic pressure in the recovery chamber 521 into the cooling chamber 522 for cooling, so that the cooling liquid circulates in the water cooling pipe 53, the micro motor 55 drives the impeller 54 to rotate to retract the cooling hydraulic pressure into the cooling chamber 522 for cooling, meanwhile, the cooling liquid in the cooling chamber 522 enters the water cooling pipe 53 to efficiently, the time is guaranteed to work reliably and stably when the diode chip 2 works, and the service life of the diode chip 2 is prolonged.

As an embodiment of the utility model, through thermoelectric generation piece 57 fixed connection between heat-conducting plate 51 and the water-cooling tank 52, thermoelectric generation piece 57 and micro motor 55 electric connection, thermoelectric generation piece 57 are used for supplying power for micro motor 55, utilize the difference in temperature between heat-conducting plate 51 and the water tank to generate electricity, thereby supply with the rotation of micro motor and do not need external power supply.

As an embodiment of the present invention, the coolant in the water cooling tank 52 is deionized water, and the deionized water is unable to conduct electricity, and even if the coolant leaks, the coolant will not cause short circuit.

As an embodiment of the present invention, the heat conducting plate 51, the water cooling tank 52 and the water cooling pipe 53 are copper products with strong heat dissipation capability.

As an implementation mode of the utility model, the width and the thickness of the connecting bridge 3 are 3-6mm copper bars, so that the connection is firm and stable.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a single-phase rectifier bridge, includes bottom plate (1), diode chip (2), connects bridge (3) and binding post (4), its characterized in that: the four bottom plates (1) are welded with diode chips (2) wrapped by copper sheets on the front surfaces of the four bottom plates (1), the anodes of the diode chips (2) wrapped by the copper sheets face upwards, the cathodes of the diode chips face downwards, the anodes of the diode chips (2) on two adjacent bottom plates (1) are connected through a connecting bridge (3), and a rectangular rectifier bridge with a hole in the middle is formed; four just, negative pole output terminal (4) of single-phase rectification to and input terminal (4) of single-phase alternating current have been welded respectively on bottom plate (1), bottom plate (1) are aluminium base composite sheet, have seted up the rectangle square hole between four bottom plates (1), be provided with water-cooling subassembly (5) in the rectangle square hole.

2. The single-phase rectifier bridge of claim 1, wherein: the water cooling component (5) comprises a heat conduction plate (51), a water cooling box (52), a water cooling pipe (53), an impeller (54) and a micro motor (55); the heat conduction plate (51) is welded on the base plate (1) through a heat conduction column, the water cooling tank (52) is arranged on the heat conduction plate (51), the water cooling tank (52) is partitioned into a recovery chamber (521) and a cooling chamber (522) through a partition plate (56), the recovery chamber (521) is communicated with the cooling chamber (522) through a water cooling pipe (53), the water cooling pipe (53) is spirally arranged on the back surface of the base plate (1), a micro motor (55) is fixedly installed outside the water cooling tank (52), the output end of the micro motor (55) rotatably penetrates through the water cooling tank (52) and is provided with an impeller (54), the impeller (54) is arranged in a through hole formed in the partition plate (56) in a penetrating manner, and the impeller (54) is used for retracting cooling hydraulic pressure in the recovery chamber (521) into the cooling chamber (522) for cooling so that the cooling liquid circulates in the water cooling pipe (53).

3. The single-phase rectifier bridge of claim 2, wherein: through thermoelectric generation piece (57) fixed connection between heat-conducting plate (51) and water-cooling tank (52), thermoelectric generation piece (57) and micro motor (55) electric connection, thermoelectric generation piece (57) are used for supplying power for micro motor (55).

4. A single-phase rectifier bridge as claimed in claim 2, wherein: the cooling liquid in the water cooling tank (52) is deionized water.

5. The single-phase rectifier bridge of claim 2, wherein: the heat conducting plate (51), the water cooling box (52) and the water cooling pipe (53) are all copper products.

6. The single-phase rectifier bridge of claim 1, wherein: the width and the thickness of the connecting bridge (3) are 3-6mm copper bars.